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Honeywell 621-9939 Serial Link Module

SKU: NO101921
Model: 621-9939
Product Condition: New - Open Box
$399.00

The Honeywell 621-9939 Serial Link Module is a communication interface for Honeywell Series 9000 and IPC 620 control systems. It manages serial I/O data exchange between the main processor and distributed serial devices using dual asynchronous channels and RS485 connectivity.

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One year warranty
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Product Description

Honeywell 621-9939 Serial Link Module V2.4 HR02

The Honeywell 621-9939 Serial Link Module is a core communication component used in Honeywell Series 9000 and IPC 620 industrial control systems. It functions as an intelligent interface between the main processor and distributed serial devices, supporting long-distance serial data transmission in industrial environments.

Serial Communication Interface

  • Provides two independent asynchronous serial I/O channels
  • Uses RS485 electrical interface with isolated communication
  • Controls serial data exchange between processors and remote I/O modules
  • Supports operator interfaces and serial input/output modules

Performance and Architecture

The module supports data rates up to 115.2 kbps and enables communication distances of up to 10,000 feet when installed with specified cabling and termination. It incorporates CRC and data-receive timeout mechanisms to support reliable operation in industrial environments.

Applications

  • Honeywell Series 9000 control systems
  • Honeywell IPC 620 industrial controllers
  • Distributed serial I/O and operator interface networks
Specifications
Specifications
MPN 621-9939
Product Condition New - Open Box
Shipping Length (in.) 14
Shipping Width (In.) 5
Shipping Height (In.) 3
Item Returns This item can be returned
Module Type Serial Link Module
Serial Channels Two asynchronous serial I/O channels
Electrical Interface RS485, isolated
Maximum Data Rate 115.2 kbps
Maximum Transmission Distance Up to 10,000 ft with specified cable and termination
Error Detection CRC and data-receive timeout
Power Requirement 2.06 A at +5 V DC
Mounting Honeywell Series 9000 chassis slot
Dimensions 3.0 cm Ă— 26.7 cm Ă— 17.3 cm (1.2 in Ă— 10.5 in Ă— 6.8 in)
Weight Approximately 0.6 kg (1 lb 6.4 oz)
Operating Temperature 0°C to 60°C (32°F to 140°F)
Storage Temperature -40°C to 85°C
Humidity 5% to 95% non-condensing
Hardware Revision V2.4 HR02
What's in the box?
  • Honeywell 621-9939 Serial Link Module
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